fix: fix missing namespaces in C++ code

[esteve]

Description

I noticed that the plugins were missing namespaces, this PR adds namespaces in the code and in the plugin definitions in CMake.

Related links

Parent Issue:

• Reorganize the autoware.universe/common packages autoware#5077
• Prefix packages with autoware_ prefix and keep code in autoware namespace autoware#4569

How was this PR tested?

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.

[github-actions]

Thank you for contributing to the Autoware project!

🚧 If your pull request is in progress, switch it to draft mode.

Please ensure:

• You've checked our contribution guidelines.
• Your PR follows our pull request guidelines.
• All required CI checks pass before marking the PR ready for review.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 29.44%. Comparing base (f9159c1) to head (74370bb).
Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
...ponent_interface_tools/src/service_log_checker.cpp	0.00%	1 Missing ⚠️
...src/traffic_light_recognition_marker_publisher.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9477      +/-   ##
==========================================
- Coverage   29.44%   29.44%   -0.01%     
==========================================
  Files        1443     1442       -1     
  Lines      108560   108565       +5     
  Branches    41533    41535       +2     
==========================================
- Hits        31970    31967       -3     
- Misses      73476    73486      +10     
+ Partials     3114     3112       -2     

Flag	Coverage Δ		*Carryforward flag
differential	0.00% <0.00%> (?)
total	29.44% <ø> (-0.01%)	⬇️	Carriedforward from f9159c1

*This pull request uses carry forward flags. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[isamu-takagi]

LGTM. I have confirmed that service_log_checker_node and autoware_traffic_light_recognition_marker_publisher_node are running..

[esteve]

@isamu-takagi thanks for the review